单纯疱疹病毒2型对单核细胞表达HLA-II类抗原的影响

Effect of Herpes Simplex Virus-2 Infection on the HLA Class II Antigen Expression of Human Monocytes

目的 研究单纯疱疹病毒 2型 (HSV -2 )对人单核细胞表达HLA -Ⅱ类抗原 (HLA -DR、HLA -DQ)的影响 ,探讨单核细胞及HLA -Ⅱ类抗原在单纯疱疹病毒 2型感染中的作用。方法 用单纯疱疹病毒 2型 ( 3 3 3株 )感染人单核细胞 ,于感染后 1、3、5、7d分别收集细胞 ,用APAAP法检测单核细胞HLA -DR、HLA -DQ表达水平。结果 单纯疱疹病毒 2型感染后 1,单核细胞表达HLA -DR、HLA -DQ抗原水平明显降低 ,以后均逐渐升高 ,至 7d达到对照组水平。结论 单纯疱疹病毒 2型感染早期能抑制单核细胞表达HLA -Ⅱ类抗原 ,HSV -2抑制单核细胞表达HLA -II类抗原可能是HSV -2逃避机体的手段之一。HLA -Ⅱ类抗原在单纯疱疹病毒 2型致病及免疫过程中可能起重要作用。

Objective To investigate the role of HLA class II antigen of human monocytes in pathogenesis of herpes simplex virus-2 (HSV-2) infection. Methods Human monocytes were infected by HSV-2 (333 Strain). The cultured cells were collected at the first, third, 5th, and 7th days of post-infection. The expression of HLA class II antigen of the infected monocytes was measured by alkaline phosphotase anti-alkaline phosphotase method (APAAP). Results The expression of HLA class II antigen on the monocytes significantly decreased at the first day of post-infection,and then gradually increased and reached to the normal control level at the 7th day of post-infection. Conclusion HLA class Ⅱ antigen expression of monocytes was inhibited by HSV-2 infection at early stage, which may be one of means of virus escaping host immunity. The expression of HLA class Ⅱ antigen may play an important role in HSV-2 pathogenicity and immunity.